AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver
Features
• Interchangeable with SGS L6219DS
• 750mA continuous output current
• 28V output sustaining voltage
• Internal clamp diode
• Internal PWM current control
• Low output saturation voltage
• Internal thermal shutdown circuitry
• SOP-24 Package
General Description
The AT5519 motor driver is designed to drive both
winding of a bipolar stepper motor or bi-
directionally control two DC motor. An internal
PWM controls the output current to 750mA with
peak startup current up to 1A. Two logic-level
inputs select output current limits of 0, 33, 67, or
100% of the maximum level. A PHASE input to
each bridge determines load current direction. A
thermal protection circuitry disables the outputs if
the chip temperature exceeds safe operating limits.
Applications
•Scanner
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
1
AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver
Pin Configuration
Pin Description
Symbol
Pin
No.
Descript
Symbol
Pin
No.
Descript
OUT
1A
OUT
2A
SENSE
2
COMP
IN
2
OUT
2B
GND
GND
I
02
I
12
PHASE
VREF
2
RC
2
2
1
2
3
4
5
6
7
8
9
10
11
12
Output Connection
Output Connection
Current
Sense
Connection
Input Connected
Comparator
Output Connection
Ground
Ground
VCC
RC
1
Resistor
VREF
1
to
the
PHASE
1
I
11
GND
GND
13
14
15
16
17
18
19
20
21
22
23
24
Power supply input for Logic
circuitry
OFF time setting
Reference voltage
comparator
Current Flow input
Current
PWM1
Ground
Ground
Current Level
input
PWM1
Output Connection
of
Level
of
the
input
of
Current Level
input of
I
01
PWM2
Current Level
input of
OUT
1B
PWM2
Current Flow input
COMP
IN
1
Reference voltage of the
SENSE
1
comparator
OFF time setting
VBB
Input Connected to the
Comparator
Current
Sense
Resistor
Connection
Power supply input for Load
circuitry
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
2
AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver
Ordering Information
Part number
AT5519S
AT5519S_GRE
Package
SOP24
SOP24, Green
Marking
AT5519S
AT5519S, date code with one bottom line
Absolute Maximum Ratings
(T
a
=+25
0
C)
Item
Symbol
Ratings
Units
Storage temperature
Operating temperature
Motor Supply Voltage
Output Peak Current
Output Continuous Current
Logic Supply Voltage
Logic Input Range
Output Emitter Voltage
Power consumption
T
STG
T
A
VBB
I
OUT
I
OUT
VCC
VIN
V
SENSE
Pd
-55〜＋150
-20〜＋85
30
1.0
750
7
-0.3~+7.0
1.5
55
℃
℃
V
A
mA
V
V
V
°C/W
*Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set
of condition, do not exceed the specified peak current ragting or a junction temperature of +150°C
Power Dissipation
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
3
AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver
Electrical Characteristics
(VCC=4.75~5.25V, VBB=28V,VREF=5.0V, TA=+25
0
C, TJ
≤+150
0
C)
Values
Parameter
Symbol
Condition
Min.
Output Drivers (OUT
A
or OUT
B
)
Motor Supply Voltage
Output Leakage Current
VBB
I
CEX
V
OUT
=VBB
V
OUT
=0V
10
-
-
28
-
-
-
-
-
-
-
-
-
-
-
-
0.4
1.0
1.1
1.3
-
1.6
20
5.0
28
50
-50
-
0.6
1.2
1.4
1.6
50
2.0
25
10
V
μA
μA
V
V
V
V
V
μA
V
mA
mA
Typ.
Max.
Unit
Output Sustaining Voltage V
CE(SUS)
I
OUT
=±750mA,L=3.0mH
Sink Driver, I
OUT
=±500mA
Output Saturation Voltage V
CE(SAT)
Sink Driver, I
OUT
=±750mA
Source Driver, I
OUT
=-500mA
Source Driver, I
OUT
=-750mA
Clamp Diode Leakage
Current
Clamp Diode Forward
Voltage
Driver Supply Current
Control Logic
Input Voltage
V
IN(1)
All Input
V
IN(O)
All Input
I
IN(1)
V
IN
=2.4V
V
IN
=0.8V
I
R
V
F
V
R
=28V
I
F
=750mA
I
BB(ON)
Both Bridges ON, no load
I
BB(OFF)
Both Bridges OFF
2.4
-
-
-
1.5
9.5
13.5
25.5
-
-
-
-
-
-3.0
-
10
15
30
170
40
-
0.8
20
-200
7.5
10.5
16.5
34.5
-
50
V
V
μA
μA
V
Input Current
Reference Voltage Range
V
REF
Operating
I
0
=I
1
=0.8V
V
REF
/
I =2.4V, I
1
=0.8V
V
COMPIN 0
I
0
=0.8V, I
1
=2.4V
Current Limit
Threshold(at trip point)
Thermal Shutdown
Temperature
Total Logic Supply
Current
T
J
I
CC(ON)
I
0
=I
1
=0.8V, No Load
°C
mA
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
4
AT5519
Preliminary Product Information
Dual Full-Bridge Stepper Motor Driver
I
CC(OFF)
I
0
=I
1
=2.4V, No Load
-
10
12
mA
Typical Application Circuit
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
5
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